Our existence, lifestyles, and growth depend entirely on the sun and the earth. The energy from the sun is called solar capital. In the same way, the planets, air, water, fertile soil, forests, grasslands, wetlands, oceans, lakes, wildlife, minerals, and natural purification and the recycling process is treated as Earth's capital.
1. 1 BASIC CONCEPTS : NATURE, ECOLOGY, ENVIRONMENT 1.0 Objective 1.1 Introduction 1.2 Evolution of human being 1.3 Ecology 1.4 Environment 1.5 Types of Environment 1.6 Summary 1.7 Reference 1.8 Questions 1.0 OBJECTIVES 1) To make the students aware of the meaning of environment and its relationship with society. 2) To familiarize the students with basic concepts namely - ecology and environment. 1.1 INTRODUCTION Our existence, lifestyles and growth depend entirely on the sun and the earth. The energy from the sun is called solar capital. In the same way, the planets, air, water, fertile soil, forests, grasslands, wetlands, oceans, lakes, wildlife, minerals and natural purification and recycling process are treated as Earth's capital. We use the term 'environment1 to describe, in the language of G.T Miller, The Plant's fife - support system for us and for all other forms of life'. In effect, the environment is me sum-total of solar capital and earth capital. It also includes the thing created by humans. Environment now extends far beyond the bounds of the local environment, thus it is the intimate enclosure of the individual or a local human population and the global domain of the human species. Ecology as a discipline is focused on studying the interactions between an organism of some kind and its environment. In ecology, 'niche' refers to the role an organism or species play in its ecosystem. An organisms niches includes everything affected by the organism denying its lifetime. We study ecology to learn how nature works. So ecology is a study to achieve a new goal to help scientists to develop methods to protect the natural world - physical
2. 2 1.2 EVOLUTION OF HUMAN BEING Man is clearly an animal. His heart, intestine, liver, lungs differ little from the corresponding organs of cat, a dog or a monkey. His respiration, digestion, reproduction muscle contraction, nerve or endocrine co-ordination fine the same general processes and same general chemical and physical relations that one finds in animals. If subjected to classification there is no difficulty in recognizing that man is a vertebrate and hence belongs to the phyllum chordata. Among the vertebrates he obviously belong with the class of mammals. He is bipedal using only his hand legs for locomotion but this is also true of Kangaroos. Men, monkeys and apes are very similar to the anatomy. Ecologist concerned with the study of various eco-systems regard man chiefly as a disturbing element in it, and it is this growing attitude on the growing reality of man's disturbing tendency that has given rise to the academic interest in man-nature relations. When Darwin published the Descant of Man (1871) he did not know of any human fossils. He built his case for human evolution entirely on evidence from living men and living primates, and he thought the great break in the Organic chain between apes and man might never be bridged because of the imperfect nature of the fossil !n late 1920s and early 1930s a series of man-like fossils were found in a cave deposit near Choukoution in China, 42 miles from Peking (Bejing). These very the remains of what came to be called as the Peking man or Sinanthropus. In subsequent years a variety of homonid fossils were discovered mostly in Africa. These do not form a neat chin of links leading from ancient ape to modern man. They cannot be arranged in a single sequence and it appears that a considerable variety of man-like animals lived a different times and places in the pleistocene. The Pleistocene was short as geological periods go, and it was also peculiar in having great four waves of glaciation around their way much across North America and Europe, and particular events are dated with reference to these glacial and interglacial periods, although absolute time range remains uncertain. 1.3 ECOLOGY The word ecology derived from the Greek word 'Oikos meaning habitation, and logos meaning discourse or study, implies a study of the habitations of organisms. Ecology was first described as a sepearate field of knowledge in 1866 by the German Zoologist Ernst Haeckel, who invented the word Ecology for 'the relation of the animal to its organic as well as its inorganic environment,
3. 3 particularly its friendly or hoslite relations to those animals or plants with which it comes in contact. Ecology has been variously defined by other investigators as "Scientific natural history", "the study of biotic communities, or "the science of community population", probably the most comprehensive definition is the simple one most offers given' a study of animal and plants in their relations to eachother and to their environment. Ecology may be studied with particular reference to animals or to plants, hence animal ecology an plant ecology. Animal ecology, however, cannot be adequately understood except against a considerable background of plant ecology. What animal and plants are given equal emphasis, the term bioecology is often used. Causes is plant ecology usually dismiss animals as but one of many factors in the environment. Synecology is the study of communities, and autecology the study of species. There is some confusion in these terms since Europeans commonly use 'ecology' in manover sense - meaning the environmental relations of organisms or of communities. The broader study of communities, including species interrelations and community structure and function as well as environmental relations (Synecology), is generally ermed ―bioecology‖ or "biosociology" by Europeans. 1.5 ENVIRONMENT Its meaning and significance History reveals that human race was once afraid of nature and the natural forces. Human beings worshiped nature and considered nature as superior to human race. Enormous increase in human population raised the demand for development and increased the consumption of variousnatural resources resulting in environmental The term environment describes the sum total of physical and biotic conditions influencing the responses organisms. More specifically, the sum of those portions of the hydrosphere, lithosphere, and atmosphere into which life penetrates is the biosphere. There are no characterstics of permanent inhabitants of the atmosphere, although the air is traversed by manly kinds of animals and plant propagules. Of the hydrosphere, there are two major bicycles, marine and fresh water, of the tithosphere there is one land. A-habitat is a specific set of physical and chemical conditions (for example, space, substratum, climate) that surrounds a single species, a group of species or a large community. The ultimate division of the biosphere is microhabitat, the most intimately local and immediately set of conditions surrounding an organism, the burrow of a rodent, for instance, or a decaying log. Other individuals
4. 4 or species are considered as a part of the community to which the organisms belong and not part of its habitat. The term biotope defines a spatial or topographic unit with a characterstic set both of physical and chemical conditions and of plant and animal life. In order for organisms to exist they must respond or adjust to the conditions of their environment. The first living organisms probably evolved in the sea and must have possessed very generalised adjustments to this relatively uniform and favourable habitat. However, these early organisms are inherent in them the potential for expansion, as they later spread into other and more rigorous habitats, particularly fresh water and land. As evolution proceeded, organisms became more and more limited in the range of their ability to respond as they became specialised in their adjustment to particular habitants. This led to the great diversification of species that we see at the present time, with each species restricted to its particular microhabitat and place in the community. 1.5 TYPES OF ENVIRONMENT Environment can be classified into 3 broad types a) Biotic (living) - The word biotic refers to having to do with living organisms. Biotic elements refer to the biological component of the ecosystem, consisting of population of plants, animals and micro organisms in complex communities. The biotic factors influencing an organisms, viruses and other parasytic organisms cause diseases. There are all parts of an organisms biotic environment. The biotic component of the ecosystem consists of 3 distinct groups of organism, the producers, consumers and decomposers. The producers are those organisms capable of photosynthesis, production of organic material solely from solar lift and carbondioxide. This organic material serves as a source of both energy and mineral nutrients. Both are required by all living organisms. Examples include both terresticial and acquatic plants such as phytoplankton. The consumers are organisms whose very survival depends on the organic material manufactured by the producers. The consumer represent animals of all sizes ranging from large predators to small parasites, such as mosquitoes and flies. The nature of the consumers dependence on the producers takes various forms. Some consumers (herbivores such as rabbits) are directly dependent on primary producers of for energy. Others (carnivores such as tigers)depend indirectly on primary producers. The last group of living organisms is the decomposers. These include micro- organisms such as fungi, bacteria, yeast etc. as well as a diversity of worms, insects and many other small animals. They all rely on dead organisms for their existence and survival. In their efforts to survive and obtain energy they decompose materials released by plants and consumers to their original elements (C,O,H,N,S,P). This
5. 5 is what keeps material cycling within the ecosystem. The biotic community together with the physical environment forms are interacting system called ecosystem. b) Abiotic - Abiotic factors* include the flow of energy necessary to maintain any organism, the physical factor that affect it and the supply of molecules required for its life functions. Other physical factors include climate, temperature, preciptation, including its types (rain, snow, hill) around and seasonable distribution, types of soil present (sandy or clay, dry or wet, fertile or infertile). All forms of life require atoms such as carbon, nitrogen and phosphorous and molecules such as water to construct and maintain themselves. The organisms constantly obtain these materials from environmental by eating food or taking them us through the process of In the ecosystem, the abiotic (non-living) \components perform 3 important function water and oxygen for organisms. 2nd, they act as a reservoir of the 6 most important elements for life, carbon(C), hydrogen(H), Oxygen (O), nitrogen (N), Sulphor (S) and phosphorus (P). These elements constitute 95% of all living organisms. 3rd, the Earth contains only a fixed amount of these elements. Thus continual functioning of the ecosystem requires one thing at least. These elements have to be recycled because they are critical to the welfare of the ecosystem as a whole. c) Cultural - The stage of development that human being have attained in the path towards progress will determine their culture as way of life. Human interaction with environment also influence the ecosystem. People of different cultures view their place in society from different angles. Among the factors that can shape their views are religious understandings, economic pressures and fundamental knowledge of nature. Due to this diversity of background different cultures put different values on the natural world. But the general attitude has been one of development rather than preservation. Technology has been the key to human progress. Technology has also increased the quantity of environmental degradation. Human interaction with the environment has increased very fast of late. For example, the green house effect is thought to result from energy consumption, agricultural practices and climatic change. It is now felt that we have entered an era characterised by global change that arises from the interdependence between human development and their environment. So self conscious and intelligent management of the earth is one of the greatest challenges facing humanity today. Human also cause extinction lin indirect ways. The building of dams changes the character of rivers, making them less suitable for some species.
6. 6 1.5 SUMMARY Nature and environment are commonly used terms for the ecology. Man is seen as a sort of geoglogical force reshaping landscape, favouring some kinds of organisms and destroying others, changing the very composition of the atmosphere and starting new chain of radio activity with atomic explosions. 1.6 REFERENCE 1) Marston Bates 1961, Man in nature, Practice Hall New Jersey. 2) Ruth Moere 1975, Man in Environment, Tata McGraw Hill, New Delhi 3) Gibson A 1866 : A Hand Book of Forests 1875-1860 Bombay Government District Gazetleer North Kanara Bombay 4) Tiwari PR, Raj G 1992, Environmental Ecology Akashdeep Publishing Home Delhi. 5) Thirmurthy A.M. 2004, Principles of Environmental Science, Engineering and Management, Shroff Publishers Mumbai. 1.7 QUESTION Q.1. Define environment and ecology? Q.2. What do you know about the ecology and types of environment? 2 CHANGING HUMAN - NATURE RELATIONSHIP 2.0 Objective 2.1 Introduction 2.2 Dynamics of development and changing human nature relationship. 2.3 Factories responsible for changing human nature relationship. 2.4 Summary 2.5 Reference 2.6 Questions 2.0 OBJECTIVE 1) To familarize the students with their natural surroundings.
7. 7 2) To make the students aware about the basic necessities (food, water, air) required for day to day living. 2.1 INTRODUCTION Everything which surrounds us may be collectively termed as environment. It is from the environment that we get food to eat, water to drink, air to breathe and all the basic necessities required for day to day living. The environment therefore can be said to constitute as "Life support system". Since the environment is crucial to human wellbeing and human survival, we have a duty towards the environment i.e. a duty which is derived from human interest. This involves a duty to assure that the earth remains environmentally hospitable for supporting human life. For this there is a need to strike a balance between resource use and resource availability. To have sustainable development it is necessary that technology is used with prudence, otherwise the tool can become a weapon of destruction leading to environmental 2.2 DYNAMICS OF DEVELOPMENT AND CHANGING HUMAN - NATURE RELATIONSHIP – Hinduism states that the natural environment is a manifestation of divine nature itself. The order of creation was Akash (space), Vayu (air), Teja (energy), Aap (water) and prithvi (earth). These are known as the 'Panchtatva1 or the five elements. Hindu code bill or dharma strives to create harmony for the individual not only within the established societal order but also with the natural environment. There are from basic components of natural environment :- 1) Atmosphere or the air. 2) Hydrosphere or the water. 3) Lithosphere or the rocks and soil. 4) Biosphere or the living component of the environment. Atmosphere - this consist of a complex mixture of a number of gases, watervapour and a variety of fine particulate material. The earth's atmosphere can be roughly divided into 4 major zones based on temperature. These zones are as follows :- a) The troposphere :- this is immediately above the earth's surface and extends upto a height of 20 kms. above the equator and 8 kms. over the poles. The temperature may drop to 60°C at is upper extremely. b) The Stantosphere :- it is about 30 kms. in thickness and is an important zone of the atmosphere as it contains the 'Ozone' layer. The temperature in this zone rise from - 60°C to O°C.
8. 8 c) The mesosphere - it is about 40 Kms in thickness and this zone is characterise by gradual decline in temperature to about 90°C. d) The thermosphere - in this zone the temperature increases with height & most of the consituents of this zone are in an ionized state. Importance of atmosphere :- As a life support system the atmosphere or air is important to us. 1) The structure and the composition of atmosphere are responsible for creating conditions suitable for the healthy existence of the biosphere. 2) Atmosphere regulates the temperature of the earth. This is due to the presence of gases which are capable of absorbing long wavelength radiations, otherwise no activities could be carried out due to extreme temperatures. 3) The incoming solar radiations are filtered above the earths surface. Harmful ultraviolet rays are absorbed in the stantosphere by the vital ozone layer. These ultraviolet rays can severly damage life on earth. 4) The temperature and pressure patterns regulates the abundance and composition of the biotic system or earth. 5) The atmosphere is a quick and effective media for transfer transport and dissemination of gaseous wastes. 6) Pollutants in the atmosphere are removed to a great extent due to snow deu or rain which cleans the atmosphere. Hydrosphere :- an enormous quantity of water is present on our planet. In the total estimated water on earth 95% is locked in the lithosphere and 5% is actually available for fine circulation. Much of the available water contains a high percentage of salt and is therefore of little use to mankind. It is mainly the water received is the form of preclipitation - rain dew snow which is the most important source of fresh water to life as the earth. Importance of water :- 1) Without water life as it exist on Tour planet is impossible. 2) Water is an important medium in which all biochemical reaction within a living organism and the other component of the environment like rocks soil etc. occurs. 3) The availability of water determines the nature composition and abundance of vegetation and other forms of tenestrial life. 4) Water vapour can effectively absorb long wavelength radiations and therefore it acts like a greenhouse gas and plays an important role in regulating the temperature of the earth's crust. 5) Water can be retained in the soil due to high surface tension and the moisture retained in the soil therefore support vegetation.
9. 9 6) The low lying region of the world, the river basins and land along seawast is much more productive and nearly 90% of the world population is concentreted in these areas. Lithosphere or Rocks & Soil - The lithosphere can be broadly in two categories A) Rocks B) Soil. a) Rocks - the rocks found on the earth's crust are of three types. a) Igneous rocks - they are formed by cooling and solidification of moltan rock material called Magma e.g. Basalt. b) Sedimentary rocks - develop as a result of gradual accumulation consolidation and hardening brought about by wind and water. These rocks are characterised by distinct sedimentary layers e.g. shale sandstone. c) MetaOnorphic rocks - are formed as a result of metamorphosis of igneous and sedimentary rocks due to intense heat and high pressure eg. Marble Slate. Formation of soil The changes in the earth's crust as a result with atmosphere and the hydrosphere is called weathering. These are different agencies which cause the weathering of rocks. 1) Chemical weathering - is a relatively slow and simple process. The major agents responsible for chemical weathering are water, air, oxygen carbondioxide and other materials. 2) Physical weathering - this is brought about by a mechanical process due to changes in temperature water and wind. 3) Biological weathering - is caused by a number of organism which aid in the disintegration of rocks. Roots of plants growing in cracks and fissure creates considerable pressure and causes the rocks to disintegrate. Soil:- The important constituents of soil are a) Particles of sand silt and clay b) Organic material c) Soil water and atmosphere Importance of soil to the Biosphere 1) Soil provides mechanical support to the plants. 2) The porosity and moisture holding capacity of the soil enables fit to retain rain water or water flowing over or through it for long durations. 3) Soil contain organic matter such as nitrifying bacteria, some microbes fungi and protozoan‘s to maintain in fertility for plants and Vegetation to flourish.
10. 10 Biosphere :- This forms a thin curst of living beings over the surface of the earth. The biosphere includes most of the hydrosphere and parts of the lower atmosphere and upper lithosphere. This ranges from the deepest ocean fluel 20 km (12 miles) below sea level to the tops of the highest mountains. Within the ecosystems organisums interact with one another and with their physical environment in various ways. On the basis of this interaction the biotic community can be grouped into following :- a) Producers :- i.e. green plants which absorb carbondioxide mineral nutrients and water and release oxygen required for other living things on earth. b) Consumers :- producers are consumed by herbivorous animals who in turn are consumed by carnivorous animals or the secondary consumers. This establishes a chain known as the food chain. c) Decomposers :- the facial matter excreata of animals plants humans and other dead organisums are decomposed by the activity of bacterial fungi and other small organism which thrive on decaying organic matter. The decomposers are important because they "bring .... the constituent elements of plants and animal bodies back to the surrounding medium or soil. However many human activities have had a negative effect on the biosphere. The illegal dumping of wastes, burning of fossil fuels mining and extraction of resource has led to the pollution of air, water and soil. It is now increasingly felt that the biosphere must be conserved. To achieve this the concept of biosphere reserves was developed by the UNESCO, which had three major objectives. a) First to conserve for the present and future human use the diversity and integrity of biotic communities of plants and animals and to safeguard the genetic diversity of species for continued b) To provide areas for ecological and environmental research. c) To provide facilities for education and training. 2.3 FACTORS RESPONSIBLE FOR CHANGING HUMAN-NATURE RELATIONSHIPS ARE AS FOLLOWS 1) Population - the experiences gained through successes and failures of several development have led to the greater understanding that development lis a multidimensional concept which encompasses not only economic and social activities but also those related to population use of natural resources and their resulting impacts on the environment. There has been some understanding in the past about the inter relationship between people - resources environment - development. But the efforts
11. 11 adopted to solve the problems were essentially sectoral. Although the relationship perse was not new, it was disregarded in the face of rapid development and technological advancement. It is common knowledge that attempts to solve seemingly environmental problems like desertification and the loss of productive soil or deforestation, emphasis should be placed notonly on such physical factors like climate, soil type modes of cultivation on land use patterns, but also on many other driving forces like demographic trends, types of technology levels used and distribution of income among the population consumption patterns, cultural habits, and educational levels of the inhabitants. Without such an integral approach, action taken to solve the specific problem could give rise to several other side effects, the sum total of which would even be worse than the problems to be resolved. Rapid population growth has serious environmental as well as developmental implications. The world population doubled from about 300 million to 600 million in more than 1500 years. The world population steadily increased from 2.5 billion in 1950 to 4.8 billion in 1984 and 6 billion in 2000, in just 50 years. The population spread, density, socio-economic political and cultural characterstics vary from place to place and country to country. However population is subject to births and deaths. While births increase the population, the death decreases population, depending upon the rate at which addition and is taking deletion place. While the addition to the population demands developments, the very developments increases resource consumption and pollution is likely to affect the population through increased death rate. The rate at which the reduction in global population takes place will depend on the environmental deterioration, and impact on human health. b) Development - Development is multifaceted. The increasing population develops stress on agriculture for increased food production, establishment of employment centers to develop opportunities for gainful employment, efficient transport for mobility, shelter for better living health and educational facilities. The quantity and quality of these facilities depends on the affordability characteristics of the population. These developments utilize natural resources (land, water, air etc). Increase in population and provision of basic human necessities to each individual mean more food, energy and raw materials. Intensifying the supply of food means more land, water, energy and fertilizers. This leads to energy crises and higher oil prices, less energy available to increase food production. To alleviate fertiliser shortages, and the common denominator in virtually all responses it requires more capital, more technology and more co-operation.
12. 12 The demand and supply equation attains greater meaning depending upon the economy, socio-cultural order prevailing in the country. For example, raw-materials continue to get exported from developing countries, in turn, the finished goods, which are costlier, get imported in poorer countries thus upsetting the economic balance and the environmental balance too. Thus material movements are transpounday, with long distances from origin to destination, transmedia with many processes between gases, liquids and solids and hans generational transferring impacts and responsibilities from present to future. c) Consumption of natural resources Different parts of the globe are endowed with natural resources of varying types, quality and quantity. The degree of consumption of these natural resources are neither uniform at all places nor priced at the same level. For example, iron and steel are used world over. But some countries are the highest producers of iron and steel but they may be importing raw materials in bulk and exporting finished products to other countries. The place or country where raw material is available in plenty and exported is subjected to environmental degradation due to deforestation soil erosion and making the land less fertile. The country where the raw material is proceed may be subject to industrial pollution. Thus the pollution is also transferred from place to place. Similarly the rate of consumption and the attendant environmental problems also very from place to place. The major environmental problem however is when the raw- materials are processed, they are subject to physical and biological change and the environmental pollution starts. The natural resources which are land, water and air get polluted to different degrees, however only when the holding capacity exceeds, it produces harmful results. While land and water pollution is confined to limited area, the air pollution finds no boundary and carried over to a longer distance. The very land which supplies raw material, receives the pollutant. d) Health hazards Pollution of land water and air ultimately affect the living organism. Manifestation of several diseases at varying places differs in its severity depending upon other climatic factors, including temperature, wind, humidity etc. Similarly people living in different places with varying environments are affected differently. New drug are being found everyday. The chemical industries which supply the chemicals and the pharmaceutical industry which manufactures medicine, release large quantity of chemical effluents which have severe side effects or causes diseases warranting further efforts to find new drugs. Thus each development leads to a new development which is mostly destructive in nature.
13. 13 The very population for which the development activities are planned and developed has become the came for large scale environmental deterioration through extensive utilization of natural resources affecting the same population. 2.4 SUMMARY Interaction with fellow humans and close interaction with various aspects of nature through observation and experimentation accumulation of empirical knowledge created a base for technological development, contacts and 'nteraction further their knowledge and overall development. 2.5 REFERENCE 1) V. Gordon Childe, 1956, Man Makes Himself Walts and Co. London 2) Thirumurthy A 2004, Principles of Environmental Science and Management. Shroff Publishers. 2.6 QUESTION Q.1. Explain the concept of changing human nature relationship in society. 3 ENVIRONMENT AND SOCIETY NATURE, MODERN SCIENCE AND TECHNOLOGY 3.0 Objective 3.1 Introduction 3.2 Biological adaptations 3.3 Eco-system 3.4 Functions of an eco-system 3.5 Relationship between nature science and technology 3.6 Summary 3.7 Reference 3.8 Question 3.0 OBJECTIVES
14. 14 1) To make students aware about the changing environment and modes of living in different ecological conditions. 2) To make students gamiliar with the nature, biological and physical qualities of earth. 3.1 INTRODUCTION Man is adapted to surve in the diverse ecological conditions from aretic to equator, from mountains to ocean, from wetlands to dry lands etc. Man has to adapt himself with the changing environment in order to survive. In the struggle for existence those "weltadapted" were fit to survive while the others not adopting according to changing environment were eliminated in the course of evolution. 3.2 BIOLOGICAL ADAPTATIONS Traces of adaptations are seen in the form of biological adaptations as well as social and cultural adaptations. Pigmentation of the skin, development of the subsitanous fatty layer in the region of chick bones-storage of fat in particular portion of the human body are common example of biological adoptation. But it is true that today all these features are of less importance. Because of advancement of technology and inventions of artificial means of protection, man can easily combat with adverse climate conditions. We can say that man's direct dependence on the natural conditions is constantly decreasing. However social and cultural adoptation is an a increasing owing to his mobility. Every human society has its own distinct culture with regard to food they eat, garments they wear, rites and ritual of births and deaths and marriages modes of livelihood, means of recreation and several other activities. Notonly this a variety of life styles are seen all over the world. If we think of India, we find that although the basic cultural network is same, there is a difference in lifestyles of people, living in different regions. This difference is mainly due to the geographical and climatic conditions of that particular region, availability of resources in that particular region. According to the above mentioned reasons, the mode of livelihood changes, eating habits change, means of recreation change and the life style appear changed on the whole. People living in deserts of Rajasthan like to wear bright colorful dresses, in order to add some color to their lives, on the other hand people living in Kerala, Orissa, Assam wear white clothing, as there are enough colors in the nature there itself. People residing in Punjab eat wheat and lot of milk products, whereas South Indians eat rice, owing to the variety of crops they get in their area. In Maharashtra, we can mark difference between Vidarbh and Konkan region. Staple food of Vidarbh is Jowar where as Rice is the staple food in Konkan.
15. 15 Dances of plains and hills differ in nature because of geographical differences in plains lot of foot work and action can be seen in dances where as hill dances are contended with hand movements. People living near forest worship tree gods, snake god and forest gods etc. because their lives depend upon nature. But urbanites do not give much importance to nature gods. Environment includes everything that may effect an organism in many way. Thus it covers the physical aspects such as air, water land, soil as well as the social economic and political aspects is a complex factor interacting notonly with an organism but between its different aspects also. Thus environment can be understood as the surrounding in which man lives and influenced by the elements or the aspects of environment. Environment may be divided into the following major I) Natural and physical component - it can be further divided into two types namely abiotic or non-living and biotic or living component. The abiotic component is made up of the following – 1) Location - it can be understood in terms of the exact location of a place on the earth. Related to the location other factors can be understood such as climate, temperature, rainfall, forest, availability of water and other natural resources. 2) Terrain - altitude or degree of slope forms another significant aspect of physical environment. 3) Geological structure - it is the presence and composition of underline rocks and determines land forms and occurrence of mineral wealth. 4) Climate - it is the most dominant component of physical environment. It is understood through temperature, rainfall, humidity and sunlight. It affects various aspects such as plant growth, type of soil, occupation etc. 5) Energy - energy received from sun is the main source of heat and light is the environment. It is also the life giving force for the plant and animal world. The biotic components are those which influence living organism, plants, animals and man. They are as producers or autographs, consumer or hetrotrophs, decomposers and reducers. The biotic components are interlinked and form a food chain. II) Culture or human components - it basically includes all the man-made and ^artificial characterstics of human society. Man stays in physical or natural environment but the changes or modifies, this natural environment to suit his needs and requirements. In other words he develops a cultural environment.
16. 16 The cultural environment can be further divided into the following 1) Social environment - it can be understood interms of the non- material aspect include the norms, values, ideas knowledge etc. whereas the material aspects are the manifest forms of the non- material aspects. 2) Economic environment - it involves the different types of economic activities developed by man. Each type of economic activity has its own requirement of resources as well as technology. 3) Political environment - it includes the type of environment and its ideological principles, various important factors such as production, consumption, use of resources etc. are determined by the strategies and policies advocated by the -government. This in turn determines the level of development and progress of the society. Thus environment is a complex phenomena. 3.3 ECO-SYSTEM an assemblage of species of plants and animals inhabiting a common area and having effects on one another is known as a biotic community. A combination of a biotic community with the natural or physical environment is known as an ecosystem. The term eco-system implies to a local community of organisms inter-acting with their local non-living environment. In other words the interdependence of living and non-living aspects i.e. plants, animals, man, forest, soil etc. make an eco-system. It is defined as an unit which include all the organisms (biological component) in a given area inter-acting with the environment (physical component) so that the flow of energy leads to a clearly defined tropic (nutrient supply) structure biotic diversity and material It means every eco-system has a flow of energy and cycling of nutrients which bind the biological and physical components together. Every eco-system has a certain capacity to sustained - its components without deterioration this is called its carrying capacity. An ecosystem does not remain constant. Changes occur in it continuously in one form or the other. It is significant that even a small change in one part of an ecosystem is felt though out the eco- system. This establishes the importance of inter-linkages in an eco- system. However the system tries to maintain the stability of an eco-system depends on its diversity. More the diversity more is the inter dependence and more is the resistance to change.
17. 17 This does not however mean that ecosystem is devoid of any change. Changes do occur. It is the drastic change in eco-system that affects the environment. An eco-system has two important aspects namely structure and function. The structure includes the composition quantity and distribution of the biological and physical components. The function includes aspects such as rate of energy flow and nutrients, ecological regulation of environment by the organism etc. Some of the major eco-system of the world are sea's, fresh water marshes streams, rivers, lakes, ponds, deserts grasslands and forest. Broadly speaking ecosystem can be divided into two major 1) Aquatic or water eco-system such as seas, rivers, ponds etc. 2) Terrestrial or land eco-system such as deserts, forests etc. Eco-system constitutes a very important unit of environment. It consist of three main components namely producers, consumers, decomposers and reducers. Producers - they basically include plants which act on self-nourishing organism. These plants contain chlorophyll and with its help, they obtain solar energy and manufacture it into food, they act on a starting point in a good chain all living organisms depend on the existence of producers for their requirements of food, thus they are primary source of energy. Consumer - they are mainly of two types namely the macro consumers and micro The macro consumers can be further divided into 3 types as follows (a) primary consumer, they include the herbivorous or grass eating animals which feed on green vegetation for ex-sheep deer etc. b) Secondary consumers - they include the carnivorous which eat the flesh of herbivorous they are also called as herbivorous predators for ex fox, hyenc on land and fish and crabs in water. c) Tertiary consumers - they include the animals which feed on secondary consumers and are known as higher level carnivores ex- tiger lion on land and sharks in water a part from these omnivores are also included that this organism which depend both on primary and secondary for e.g. Man. The Micro consumer are called as deterivores such as earthworms, centipedes etc. they feed on organic matter. 3) Decomposers and reducers - they include the bacteria and fungi. These are basically micro scop organism. They break down complex compounds of dead plants and animals absorb some of
18. 18 the decomposed products and release mineral nutrients into the soil. Bacterial decomposed dead animal tissues and fungi decompose dead plants tissues. In this process of decomposition and reduction the nutrients which are released into the soil are used by procedures. 3.4 FUNCTIONS OF AN ECO-SYSTEM 1) Eco system performs the most important function of satisfying the requirements of the different aspects of the biotic component. 2) It is through an eco-system that the interaction as well as interdependence between the biological component and the physical component in the environment takes place, this interdependence is between biotic and biotic components. For ex:- plants depend on solar energy and soil. The interdependence is also between different aspects within the biotic components. For ex. the carnivores depend on herbivores. 3) Eco-system leads to transfer of food energy and nutrients from one source to another source. 4) The different forms of eco-system are beneficial because they lead to positive effects on the environment which in turn helps the living organisms. 5) Eco-systems have helped human beings by providing materials as well as services necessary for survival as well as development. 3.5 RELATIONSHIP BETWEEN NATURE SCIENCE AND TECHNOLOGY Before you understand the relationship between nature and science and technology. It is necessary to understand the meaning of each Nature - it is understood on the qualities and characteristics related to any given thing from the view point of environment. Nature consist of the biological and physical qualities of earth. It means the physical characterstics such as air, water, soil, temperature etc. as well as the natural laws and principles which control the functioning of the natural events. Science - it is defined as the systematic body of the factual knowledge obtained by the use of scientific method there are certain important characteristics of science. 1) It is based on truth or facts. 2) The scientific methods of observation and experimentation are used. 3) Science puts forwards knowledge i.e. reliable, valid and verfiable in other words the knowledge has to be precise, accurate and free from vagueness and ambiguity. 4) It believes in ethical neutrality i.e. freedom from value judgement.
19. 19 5) Science never accepts anything to be conclusively true. It is a continues search for facts hence scientific knowledge is subject revision and modification as per any new research. Technology - it is defined as the application of knowledge for practical purposes. It is closely related to science|.This is because scientific knowledge is put to practical use. There are certain important characterstics of technology 1) It has a utilitarian value. It means the means of technology are of use to the human society. 2) technology has created for reacting changes in the society. 3) It is through the creative aspects of the technology that the developments and progress has been possible technology used not necessarily always be beneficial. There are negative effects of technology also. The relationship between science, nature and technology has to be understood through man. Man is the focal point and it is his interaction with nature and his use of science and technology which has laid to a relation between nature, science and technology. During the intitial years of human civilization man was in awe of nature. In other words he respected as well as feared nature. This was because the rational and logical thinking of man was inadequate. Hence, the natural event or (natural occurrences were a mystery a constant source of fascination. Man attributed immense power to nature and firmly believed that it was nature which had ultimate control over his life. Slowly and gradually as human civilization proceeded through time a mark increased in mans intelligence, rational thinking as well as perception was noted. He started understanding the working of nature. The various natural event and occurrence could be understood interms of a cause effect relationship and natural laws. Nature no longer remained a mystery. All this became possible because of man's need to search for knowledge or facts. Knowledge or facts unfolded the mysteries of nature. In other words it was the development of science which put man in a better position to understand and evaluate nature. This created significant changes in man's perception towards nature. Initially man had accepted the domination of nature passively. However with growing awareness nature no longer was consider as an all powerful forces. It could now be termed, controlled modified, manipulated as well as exploited. With the advent of technology i.e. application scientific knowledge for a practical purposes, the situation became still worse. Man no
20. 20 longer was only taming the nature, but now he was tempering without to suit his own requirement and motives vast amount of changes were made in the natural environment under the name of development and progress of human society. These led to serious environmental degedration. Thus it was man who has responsible for waiting a relationship between nature science and technology. This relationship can be understood from a positive view point as well as negative view Positive aspects of the relationship between nature, science and As long as nature was a mystery the development and progress of human society remained as a lower level. Simple occurrences or natural events could not be deciphered by man. Man remained unaware of the causes of events such as rainfall, storms, floods, earthquakes etc. The logic and reasoning behind certain events. Such as how fire occur or how it could be ignited could never been known. This put a serious limitation on his innovativeness. But it was through science that significant changes took place in the history of mankind. Science discovered the laws of nature acted as a torch of light to explore and discover the unknown. It provided a lay of hope to man to understand a natural occurrences in a rational and logical manner. Science determines the natural functioning. This was possible because science was based on truth or facts. These facts were discovered accidentally or consciously. Once they were to discovered and sub-sequently verify, this scientific knowledge could Ibe used to modify and adopt nature for the sake of the benefit of mankind. Application of Science and scientific. Principles - development of technology after the advent of technology, the heights reached by human beings interms of development and progress have been unparalled. Various field were benefited from these developments. Examples can be given in respect to important natural resources such as land, water, soil, forest etc. Science and technology have helped in man in proper utilization of land, space, planning towns and cities. Importance of water is evident through a conscious effort at water saving and water utilization schemes. Irrigation, water harvesting, dams etc. are a result of these efforts, science and technology have contributed in improving soil fertility as well minimizing soild erosion. Apart from this the uses of forest have been maximized through science and technology wood, timber and other products of forest have been utilized to the benefits of human society. However it was the selfishness and greed of man which did
21. 21 not stop him at utilization of natural resources but led to explitation of nature. Negative aspects of the relationship between nature, science, The negative aspects are much more significant as compared to the positive aspects because of the damage they have caused to the nature. Man has exploited the natural resources in a tremendous manner. Modern scientific knowledge and technological innovations have degraded the natural environments. Examples can be given with respect to important natural resources bring misused. A lot of deforestation is carried out in order to increase landscape. This has created significant changes in rainfall. Use of chemicals as well as chemical waste have led to significant pollution levels which are evident in different forms. Water pollution, soil pollution etc. Heavy industrialization, ultranisation, modern transportation. System has caused severe air pollution. The modern science and technology had led to serious damages such as depletion of ozone layer global warming etc. Many development have taken place which had revealed that technology may not always be beneficial to mankind. We need to consider the fact that man himself was responsible for the development of science and technology. With their help the consciously tried to modify and control the nature. But in this process he himself has become their slave. Though science and technology have created for reaching heights in mankind‘s development and progress, they have also resulted in far reaching serious implications. 3.6 SUMMARY Modern science and technology brought progress but at the same time also contributed to a stressful life for human beings. Miss-use of natural resources is criminal became it reflects adversely notonly on the present but more importantly the adverse efforts will also affect the future of mankind and thus the price of development and progress which has been taking place due to science and technology is heavy to be paid by man. In conclusion, can be said that the focus of the relationship between nature, science and technology can be traced to the relationship between nature and human beings. It is very necessary to accept the power of nature. Nature is above man and hence it is futile to control or dominate it. It has to be respected and limits should be put on the use of natural environment as well as the natural 3.7 REFERENCE
22. 22 1) Agarwal Bina 1985, Women and technology changes in Agriculture. The Asian and African experience, London, George Alien and Cruwin. 2) Anon 1998, Food ? Health ? Hope ? Genetic. Engineering and World Hunger, Dorset UK. The Corner House, Briefing No. 10. 3.8 QUESTION Q.1. Write in short about the impact of modern science and technology on environment ? 4 PERSPECTIVES OF ENVIRONMENTAL ISSUES CULTURAL ECOLOGY Contents – 4.0 Objective 4.1 Introduction 4.2 Cultural ecology in relation to man 4.3 Method of cultural ecology 4.4 Studies in Cultural ecology 4.5 Cultural ecology of India's sacred cattle 4.6 Gardening and other animals 4.7 Summary 4.8 References 4.9 Question 4.0 OBJECTIVES 1. To bring awareness among the students to understand and develop close relation with environment. 2. To develop holistic approach among students to feel man environment relationship taking into account technology and socio cultural facts. 4.1 INTRODUCTION Cultural ecology approach evolved in the understanding man- environment relationship. It gives technology and culture a central place in understanding human adaptation to the physical environment. It proposes a feedback loop in the process of
23. 23 understanding human adaptation to environment. The methodology of cultural ecology suggests holistic approach to understanding man -environment relationships taking into account technology and socio cultural factors. The duality of ecology in relation to human beings has to be understood, ecology implies adaptation of an organism to environment. Since Darwin, environment has been conceived as the total web of life where in all plant and animal speres interact with one another and within the physical features or a particular unit of territory. One can understand the human biological adaptation to the environment in evolutionary terms. But man enters the ecological scene not merely as a physical organism in relation to other organisms in terms of physical characteristics, man introduces the supra organic factor of culture. Thus two quite different objectives are suggested in understanding cultural ecology. First an understanding of organic functions and genetic variations of man as purely biological species and second a demonism of how culture is affected by its adaptation to environment, this latter requires its own concepts and methods. Man reacts to web of life as cultural animal and that makes the study of Human Ecology unique. Diversity of human societies cannot be understood as a simple function of environment and resource. Human interaction to the environment is mediated by culture a collection of specific objectives, values, a body of knowledge and beliefs. Thus culture itself is not static, it is adaptable and modifiable in relation to physical conditions. 4.2 CULTURAL ECOLOGY IN RELATION TO MAN Cultural ecology as a paradigm to understand man-environment relationship was proposed by Julian Stew and has come to be recognized at Stewarding Cultural Ecology paradigm-Cultural ecology differs from other ecology studies in seeking to explain the origin of particular cultural features or patterns which characterize different areas, rather than to aim for general principles applicable to any man-environment situation. The concept of cultural ecology is less concerned with origin or diffusion of technology and the fact that technology may be used differently and entails different social arrangements in each environment. Thus societies equipped with bows, spears, bush burning, deadfall and other such hunting devices may differed among them because of the nature of fauna and flora. Other societies having about the same technological equipment may exhibit other social patterns because the perception of the environment differs to extend that the cultural adaptation must be different. For example the Eskimo use bows and arrows but owing
24. 24 to the limited occurrence of fish and sea mammals their population is so sparse that communal hunt is not rewarding. So they are dispersed in family groups. The Nevada Shoshni are also fragmented into family groups. In their case scarcity of game and predominance of seeds as subsistence basis greatly restricted economic co-operation and required dispersal of society into fairly independent family groups. A word of caution: Culturally prescribed ways may tend to perpetuate themselves in the short run and entire patterns of technology, land use, land tenure and social feature may be derived entirely from culture. But over the millennia cultures indifferent environment change tremendously, and these changes can be basically traceable to new adaptations required by changing technology and productive arrangement. Despite cultural barriers useful arts have spread extremely widely and the instances in which they have not been accepted became pre-existing cultural patterns are insignificant. 4.3 METHOD OF CULTURAL ECOLOGY Thus steward is interested in understanding the inter-relationship between environment culture and technology as a complex inter connected feedback loop in human societies. Although environmental adaptation underlies all cultural ecology the procedures must taken into account the complexity and level of culture. He suggests three fundamental steps in the reconstruction of the cultural ecology of a human society. First, an interrelationship between productive technology and environment must be analyzed. In primitive societies subsistence devices are basic, weapons and instruments of hunting, in more developed societies, agricultural and herding techniques and manufacturing of crucial instruments must be considered. In idential world capital and credit agreements, trade systems and the like are curcial. Socially derived needs become increasingly important in productive arrangements as culture develops. Second the behavior patterns involved in the exploitation of a particular area by means of particular technology must be analyzed. Subsistence pattern impose very narrow limits on the general mode of life of people. Gathering of wilduoifjtubess and vegetables is usually done by women alone. Nothing is gained by co-operation while it may lead to competition. Hunting on the other hand may be collective or individual depending on the nature of game available and the techniques used, as well as on cultural history of cooperation or individualism. 4.4 STUDIES IN CULTURAL ECOLOGY, HYDRAULIC CIVILIZATIONS.
25. 25 Steward studied the low energy consuming societies, their technologies and environmental factors to validate his paradigm. He demonstrated that, for the same technology different communities located in different age, geo-climatic conditions exhibited different social adaptation. Study of ancient complex hydraulic civilization fn Egypt, India and China were compared by Steward to indicate the developmental and socio-political similarities in them inspite of geo-climatic variation and the crops grown in these ancient semi-arid and arid, river valley civilizations. In the irrigated areas interrelationship. The productivity of farming was limited only by the amount of water that would be used in irrigation. Metal tools and animal ploughs could not increase the yield of irrigated areas beyond the limits imposed by water supply. The era of regional florescence is identified as an era where communities were weilded into small theocratic states that were religious in nature. The relation of militarism. to the enlargement of irrigation works and the expansion of states during the era are not clear. There are regious where priesthood without the backing of the military were able to create multi community states, but the extent of irrigation is not clear. In Northern Peru militarism and warefare is the manner in which the size of the state and consequently the size of irrigation works were increased. Similarly in Mesopotamia and Egypt. This happened later in China where, the empire was established first. 4.5 CULTURAL ECOLOGY OF INDIA’S SACRED CATTLE Marvin Hanis reparted studies in cultural ecology about cows, pigs, wars and 1974) A ford foundation study in 1959 concluded that possibly half of India's cattle could be regarded as surplus in relation to food supply. Harris through his cultural ecology approach challenges this conclusion. He studies the cultural ecology of India's sacred cattle. Hindus venerate cows as a symbol of everything that is alive, so that there is no greater as sacrilege Hindu than killing a cow. Cows in draught prone areas in peasant and urban economies are important in various ways as demonstrated by him. Zebu cattle have small bodies, energy storing humps on their back and greater power o recuperation. These features are adopted to specific conditions of Indian agriculture. The native breed is capable of surviving for long periods with little food or water and are highly resistant to the diseases and oxen‘s can work as long as they continue to breadth. It is a part of the low energy, small scale, and animal based system. They provide low energy substitutes for tractors and cow. Indian cattle annually excrete about 700 million tons of recoverable manure, half of it is used as fertilizers and the rest is burned as fuel. The peasants use cow dung for plastering floor and walls of their houses. The cow is the last desperate
26. 26 defense against money lenders. The scanty milk produced by the cow is vital for food security of the poor families of the peasants. He reported that non beef eating taboo applied only to the upper castes and twice been castes of the Hindu society in India. This taboo had persisted became it had an adaptive significance to the society as a whole. It allowed food security in the form of animal proteins to scheduled castes, especially during times of scarcity like periodic draughts and famines. Thus meat eating is finely adjusted to practical conditions. The meat-eating castes also tend to be the leather working castes since they have a right to dispose of the skin of the fallen cow. So despite cow love India manages to have a huge leather craft industry. The whole complex needs to be further understood in the light of economic and ecological significance. The cattle domed compete with humans for land or the food supply, as at best 20 percent of what the cattle eat cosmists of humanity inedible substances most of it is fed to oxen‘s and water buffaloes rather to dry and barrer cattle. The observed proportion of cows to oxen‘s is not very different in India and Pakistan. So the theory that religion is primarily responsible for high proportion of cow is refuted. Finally contrary to expectation studies of energy costs and energy yields show that India makes more efficient use of its cattle than the United States. The ratio of total colures consumed per year to those produced is 17 percent as against 4 percent for American beef cattle raised in lunches. Thus according to him cow love is an active e elements in a complex, finely articulated material and cultural order. Cow love mobilizes the latent opacity of human being to preserve in a low energy ecosystem, in which there is little room for waste and indolence, cow love contributes to the adaptive resilience of the human population by preserving temporarily dry or barren but still useful animals by discouraging the growth of energy intensive beef industry, by protecting cattle that fatten in public domain or at landlords expense and by preserving the recovery potential of the cattle population during draughts and famines. He talked of similar ecological significance of wars and associated rituals in another case study of the Marring community. The Marring make war on each other following allegations of abduction of women, rape the shooting of a pig in the garden theft of crops, poaching and death or disease induced by witch craft. But the an- swers to wars do not like in the participants consciousness. The study of primitive war leads to the conclusion that war has been part of an adoptive strategy associated with particular technological, by demographic and ecological condition. This being the case when humanity stands to loose more than it can possibly gain from war, other means of resolving inter group conflicts will take its place. Roy report studied the complex inter relationship, as resource exploitation in a gardening community that husbanded pigs. He studies the flow of energy among the Tesemba clan among the
27. 27 Marings in New Guinea, who practiced gardening with swine husbandry for a millennium. The gardening of yam, cassava and sweet potatoes provides the Tesemba with their daily energy ratio and the swine‘s provide them with the emergency source of protein through animal husbandry. Their way of gardening also makes the best use of a fixed volume of space. They have developed a three tiered ecosystem that exploits the micro climatic variations in the different levels of the atmosphere to grow three different varieties of tree crops. This type of gardening discourages plant specific pests and takes advantage of slight variation in the habitat to protect top soil and achieve a high level of photo synthetic efficiency. The swine husbandry is supportive activity and they are a source of animal protein during emergencies. They are slaughtered ritually once or twice in the lifetime of an individual during war. Each local Marring subgroup or clan holds a pig festival on the average about once every twelve years. The entire festival including various preparations, small-scale sacrifices and the final massive slaughter - lasts about a year and is known in the Marring language as a Kaiko. In the first two or three months following the completion of Kaiko, the clan engages in armed combat with the enemy camp leading to many casualties and eventual loss or gain of territory. Additional pigs are sacrificed during the fighting and both the victors and the vanquished soon find themselves entirely benefit of adult pigs with which to curry favour from their respective ancestors. Fighting ceases abruptly and the belligerents repair to sacred spots to plant small trees known as rumbim. Every adult male, from every dam clans men participate in this ritual by laying hands on the rumbim sapling as it is put into the ground. The war magician addresses the ancestors explaining that they have run out of pigs, fighting is over and no resumption of hostilities will take place as long as rumbim remains in the ground and they will direct their efforts to raising pigs. The burden of raising pigs falls mainly on the women who do the gardening. Feeding a pig is equivalent of feeding a human being in terms of food volume and type. Pigs compete with human in their dietary consumption. As the population of pigs and human grows it forces families to move their houses further a part over or wider area. This dispersion lowers the security of the group in case of renewed hostility. The women begin to complain about being overworked and ticker with their children. Soon the men with considerable unanimity and without counting the pigs agree that the moment has come to begin the Kaiko. The warfare begins and the cycle is complete. Within the limits set by the basic ecological and environmental condition of the Marring all this has a practical explanation. Animal proteins compared to plant proteins they generally eat, is more concentrated and metabolically more effective. It makes good ecological sense to raise pigs given their climate. Unlimited pig
28. 28 population can only lead to competition between men and pig. The role of ancestor is to encourage maximum efforts at pig raising and at the sometime to see to it that the pigs do not destroy women and the gardens. The partial taboo is thus an ecologically effective strategy is that system to maintain long term sustainability. 4.6 GARDENING AND OTHER ANIMALS This type of gardening farms and animal complex at a symbiotic and stable equilibrium is not very uncommon in the wooded hills allover India. In the Western Ghats of India the Areca nut and coconut gardens are very good examples of a complex ecosystem very efficiently exploited by the natives. In Uttar Kannad district of Karnataka a particular community of the Havoc Brahmins practice a similar gardening and animal husbandry. The care of areca nut garden is the nucleus around which life revolves in Uttar Kannada. There gardens are located in the west evergreen forests of the Western Ghats. Great care is taken to choose a site for the garden. Red soapy soil is considered the best. The garden is ideally to be faced earth, on the evening sun is believed to be doing harm. The garden needs shelter from the direct sun and leaf manure, which is procured by securing an outer belt of forest and bush wood. The gardens are fenced with live thorns bushes and bamboo. A ditch three to four deep surrounds the garden. Inside the garden trenches run parallel to each other in the direction of the length of the valley. The garden needs unfailing supply of water, which is commonly brought from, spring. To keep the gar-den productive the soil has to be manured once in two years, biological manure from cattle husbanded mainly for this purpose and dry and wet twigs branches and leaves are specially collected for this purpose. The garden's being vegetarian only drink milk from the indigenous short but study breeds of cattle. The local tribe communities employed as contract labor however do consume beef and farm. They have small plots of lands to grow paddy for domestic consumption and the stalk is fed to the cattle in addition to grazing them in forest lands. The gardens make use of the micro climatic variations in the 30 to 40 feet fall Areca nut palms. The gardens are interspersed with banana trees, at the foot of the palms are planned cardamom bushes and twinning around the palm stems are pepper and battle leaf wires. Thus the gardens, animal husbanding, paddy farms and the human communities for a homeostatic ecosystems where the homeostatic is maintained by human being who act as mediators for timely intervention in this resource complex and to reap the profits from it. Their interventions are guided by their belief systems about the functioning of the eco-systems and are built into their work practices. This resource complex has existed for the part several centuries with little or no change (Bapat J 1989) 4.7 SUMMARY
29. 29 Thus to conclude the cultural ecology paradigm for the fort time acknowledges that the Man-environment relationship cannot be understood using uni-linear causal paradigms. Infact the very idea of aiming at universal laws on the lines of evolutionary adaptation and national selection is not appropriate to understand man- environment relationship. It requires unique methods and unique paradigms that would take into account the world views of human being including the role of culture and technology in human adaptation to their environment. Human being to their environment by modifying it through culture and technology. Thus there is a feedback loop a functional interconnectedness that needs to be incorporated in the theory that captures man environment 4.8 REFERENCES 1) Bapat Jyotsna 1989 Man environment relationship. Towards a critical human ecology Ph.D dissertation, Dept. of H & SS, NT Bombay (unpublished). 2) Hanis Marnn 1969, Rise of entomological theory. History of theories in culture London, Route ledge and Kegan Paul. Rapport Roy (1971), Flow of energy in an agricultural society, scientific American 224, 3PP 117-132. Steward Julian (1955), Theory of cultural change, Urbana University of Illiois Press. 4.9 QUESTION 1) What are the salient features of cultural ecology ? 5 ENVIRONMENTAL DETERMINISM AND POSSIBALISM 5.0 Objective 5.1 Introduction 5.2 Contribution of early anthropologists 5.3 Relation between anthropology archaeology
30. 30 5.4 Ecological theory and ethnic differentiation among human population 5.5 Summary 5.6 References 5.7 Question 5.0 OBJECTIVE 1) To makes students aware about the ecological conditions and direction of human development. 2) To acquaint students technological conditions and its impact on social organization of society. 5.1 INTRODUCTION Not only Prehisheria's but anthropologists too have used archeological remains and linked them to their own discipline to show the links between cultural and natural areas. The first question they asked is Did specific ecological conditions stimulate human development in a certain direction, did it have a limited force, or if once stimulated, did development proceed on its own 5.2 CONTRIBUTION OF EARLY ANTHROPOLOGISTS WISSLER Broker and Clark Wissler were inspired by Otis Mason's 'Migration and Food Quest". A study in the peopling of America" 1895. They were convinced there was correspondence between cultural and natural arras over the entire new world. Wissler indicated "there was some kind of determinist influence had to be operating from environment to culture. He was especially surprised by the fact that when a map of North American 'ecological areas was placed over a map of the cultural areas, not only did the two line up, but the centers of the representative areas were the same for both the cultural and natural features. He was baffled why it was so. Wissler was convinced that in so far the environment influenced the cultural areas, it was though the effects of food production. But he qualified, the influence of the environment appears as a passive limiting Agency rather than a casual factor in tribal life, and it became difficult and confusing when he tried to explain the uniformity of subsistence practices within a cultural area. He explained this by the alleged advantage which occurs to the tribes of a region when they all exploit the same resource. Wissler was thus unable to formulate the essential ingredients in a homothetic approach to the culture environment relationship. Wissler had no idea how, in general, the techno-environmental conditions could be nomothetically related to the social organizations and ideology.
31. 31 Darylt Forde on culture and environment Forde was convinced that environment had a strong influenced in shaping a peoples culture but was disinclined to express it in homothetic terms. His main contribution say Marvin Hauis, was to warn geographers that they could not hope to understand cultures as mere reflexes of environment since each culture had the power to take out of the environment or to stream those aspects of it which hysterical events inclined to it to take into consideration. Forde goes on to say that even if he could discover determinist principles by which techno economic patterns could be related to the environment, one should still confront an impasas in trying to relate these patterns to the rest of the culture. Julian steward, economic and social bases of primitive bands. The above noted work of Steward is regarded as an important achievement of anthropology; it is the first coherent statement of how the interaction between culture and environment can be studied in casual terms without reverting to the geographical determination or historical particularize. There is a double focus first on identification of cross culturally valid forms of social organization, and secondly his explanation, Bonds occur among widely separated hunting and gathering people in many different part of the world. A bond is type of social organization distinguished by its political autonomy, a small population made up of several nuclear families whose access to land is controlled by ownership privileges vested in the larger group. Having established the major type of several dozen recorded cases, Steward classified them into patrilineal, composite and matrilineal sub types. He took note of the low level technologies applied to various types of habitants. His contribution was to explain how despite the diversity of environment and technologies associated with band organized societies, there remained, underlying of ecological commonalties which gave rise to a general type. This formation surpassed crude environmental determinism which makes no provision for cultural variables, but it also imposed human geography known as possibalism. There were some superflows limitations, Steward had not in one stroke severed her ties to particularism for instance, among the many factors responsible for patrilinear Bands Steward noted that the band size is restricted not by ecological relation but rather by some social factor which nevertheless brought about the occupation of small parcels of territory by correspondingly small groups. Despite such lapses, steward intended to produce a statement of nonmothetic causality based upon techno environmental regulaties. It is unfortunate steward operated with a non-statistical concept of causality. The signifiance of Steward's analysis of bands is that it showed how the interaction between technology and environment could explain most of the important
32. 32 structural and ideological features of low energy hunter gathers in most of the known examples without utilising historical or other ideographic modes of explanation. In his paper on Mutsib communities Steward was emphasisng that given a certain set of environmental and technologies conditions, the transition from band to sib is highly predicatable in a sufficiently large sample. Juxtaposing the new world sequences known from northern Peru and central Mexico with available summaries of events in Mesopotamia Egypt and North Chine, Steward demonstrated degree of development parallelism which dwarfed all of the stupendous phenomena reffered to by sapic. In all the five regions, steward identified a sequence which involved a roughly paralled development through the same stages. Stewards trial formulation of the developmental sequence in the five centres of ancient civilization was not intended to exhaust all the possible routes which cultures have followed towards complex, state organization. Rather the trajectories he outlined were those assumed to be characteristics sequence of a particular type viz. irrigation or hydraulic civilization stewards ideas at this point converged with the theories of Karl Wittfogel. Wittfogel - in 1926 Wittfogel had began to apply a cultural ecological approach to the explanations of the pecularities of Chinese and other 'Asiatic' societies. In Wittfogels early formulation these system were characterised as mighty hydraulic bureaucracy, whose despotic control over the densely populated ancient states of China, India and Egypt arose from the techno-environmental exigencies of large scale irrigation, and other fours of water control in regions of scant rainfall. The realisation that the evolution of oriental societies had followed a path substantially different from those European was quite common among the scholars of enlightenment. Wittfogels analysis of functional inter-dependence of the main features of the social organisation and techno - economic patterns of irrigation civilization led him to stress the general importance of environmental parameters in understanding of social 5.3 RELATIONS BETWEEN ANTHROPOLOGY AND ARCHAEOLOGY The links between cultural anthropology and archaeology came in late thirties and early forties with the excavations in Peru carried out by W.D. strong and his student, Gordon Willey. In the view Valley, a complex of domesticated beans, squash and cotton were identified at the based of a large mound, with an estimated date of 2500 B.C. A continuous evolutionary sequence was obtained in the mound ad in the adjacent sites leading from incipient agriculture through several stages of village life upto the lowland irrigation states which were ultimately absorbed by the Inca empire, Of special interest in
33. 33 this sequence was the phase identified by Steward as the formative, when maize was introduced and irrigation techniques took over the main subsistence load. The entire sequence is wholly intelligible as a product of endogamous forces, increasing productivity, increasing population density, multiplication of village sites, warfare inter village and later inter-valley co-ordination of production processes, increasing social stratification and bureaucratic control of production and distribution, centralization of power, feedback to greater productivity, and population density. If contacts with the old world had occurred during the 2500 to 3000 years which were required for the shift autonomous village to state organisation, nothing vital to the dynamics of the process seems to have resulted there from. The only possible exception was maize, which obviously had not been domesticated on the Peruvian coast. No wild ancestors of the plant had been identified, wild ancestors of corn have been identified in Mexico, but radio carbon 14 daks have confused a period gradual experimentation with domerticated varieties extending back to 7000 B.C. in the Tehuachan valley of central Mexico. The proof that the American domesticated corn is taint amount to a proof that they were capable of achieving every either technologies innovation associated with the New world sequence independently of diffusion from the old. Given the combination Homo sapiens, a nutritive and hardy grain, semi arid valley, ample sources of water terrain. Adaptable to irrigation, it was highly probable that irrigation civilizations would evolve, not once but again and again. 5.4 ECOLOGICAL THEORY AND ETHNIC DIFFERENTATION AMONG HUMAN POPULATION. How relevant is ecological theory to explain human ethnic differentiation plant and animal ecologists have employed it. William Abruzzi attempts to do it (Arbuzzi 1982 current anthropology vol. 2.3 P13) Arbuzzi first premises in that ecology is not necessarily a biological science, rather ecological systems have been modelled as energy flow system determined by the their odynamic principal (Margaloff 1968 Odum 1971 pp37-85) Because ecological principles areindependent of the specific biological communities and they have structural similarities that suggest the value of their being analysed from an unified ecological perspective. The fundamental units of human and non human communities alike are variables in size and comparison and respond to special and temporal variation in abundance and distribution of resources. , Finally both human and non human transform potential energy into social organisation, and the process that generate The division of labour (resources partioning) appears to be important to the organisation of human committees on they are to the evolution of
34. 34 non human systems. Abruzzin tries to saw the formation and maintenance of ethnic boundaries may be one area of social behaviour that could benefit for explicit application of ecological theory. The traditional authropological use of ethnic unit concepts resulted in naive oversimplification and is derived from a historical approach. Traditional approaches based upon a static conception of discrete ethnic groups proved incapable of dealing with the dynamics of new concerns. A more faithfull recent approach to the question of ethnic boundary formation have been those that employed ecological or material focus and have concentrated upon competition over scares resources in conjunction with the application of labour required for efficient resources exploitation. Ethnic groups are not different species. Species are genetic units connected by ability to exchange hereditary material, while ethnic groups are social units with much lesser degree of biological integrity or meaning. The decisive criterion is not fertility of the individuals but reproductive isolation of a propulaiton , Defining species boundaries is by no means clear, fertility is not a criterion of a species status among local population Population biologist and ecologist have directly concerned themselves with mechanisms and processes producting changes in species boundaries among the local population and with the relation with speciation and species replacement have to the evolution of encompassing ecological committees. An ethnic unit is difficult to define. A cultunit defined by Norot is interms of language, ecological adjustment and loclal community structure. It is difficult to use socio-cultural traits to define ethnicboundaries Problems associated with ethnic unit boundaries arise from the contradiction of imposing a static classificatory scheme no matter how necessary upon inherently variable, evolutionary phenomenal. Ethnic units in this specific committees, like local speries population are prevailing ecological condition. The discreteness of species and ethnic units alike, appear greater the more complex and broadly adapted members of each class, perhaps became of greater breadth of their respective niches and the evolutionary exclusion of class competition that this Marriage assumes central importance in the definition and analysis of an ethnic population. The extent of endogamy indicates the degree of ethno differentiation within the community. Definition of an ethnic population serve principally to distinguish that unit from other less developing social groups. This suggest that the organisation of an ethic population is more complex and encompassing than that of other social units. Neither clear species nor ethnic distinction is accepted by Aleruzzi. Rather, he says the discreteness of species and ethnic population alike must be recognized as determined buy the local ecological conditions and then variable from one community to another and commonly within the same commonly through time, since both species and ethnic
35. 35 boundaries function to regulate competing populations access to resources, the recognition that in one care the proximate cause (mechanism) of behaviour may be largely inherited while in the other they may be primarily learned should not preclude the possibility that the ultimate causes (selective pressures) in both cases may be the same. Anbuzzi explain the implication of selection theory for the farmation of ethnic population. In certain human communities it may be energetically cheaper for distinct population to exploit limited and non-overlapping sets of resources, with each population trading its surplus to neighbouring populations centred in different niches, than one undifferentiated population to exploit the total range of available resources. The distinct requirement imposed for successful exploitation for instance of a herding or a hunting (nomadic) niche contrasts sharply with those needed to occupy a farming niche. The survival of gazing animal demands the animals be mobile in their search for pastimes. Human population that exploit there animals hunt like-wise be mobile. Farmers on the other hand, must remain stationary to tend their land and crops. Each adaptation demands a repertoire of supportive behaviour. An energetic advantage thus clearly exists, under certain conditions, for distinct populations concentrated in each of these two niches, rathy than one uniform population exploiting both plant and animal resources. The demand of extensive trade within pre-industrial communities are effectively overcome by the concentration of trade in one distinct population. Again for instance population agriculture involved the use of large amounts of land for the purpose of raising labour intensive cash crops. Since the demand for unskilled labour limits its annual productive value, the labour in plantation system has historically been obtained primarily through solvey, immigration, or employment of migrant workers. There three context are examples in anthropological literature of the evolution of distince adaptations among pontentially competing population. They also furnish.instances of pronounced ethnic distinctions within the human communities. Over competition, while not absent has been reduced through the development of more or less symbolic relations, imposed in past by the greater power of the dominant population, and through the institution of complex regulations regarding ethnic interactions, particularly intermarriage. Inequility exists in such relationships however, constant with comparative energy flows in other ecological communities ethnic interaction with human communities are asymmetrical and function to maintain, even increase, the differential organisation and control that exists. Abruzzi goes on to argue niche diversification through competitive exclusion may result in human population achieving an equilibrium in which they exchange the products of their differentiated niches. The potential for developing symbiotic relationships is perhaps more charactestics of human competitors than of most other
36. 36 population. This is illustrated by consistent development of interdependence between contiguous nomadic are sendentary population throughout much of Africa and the Middle East. As with non-human population, however competition among human population's is potentially variable. In so much as endogamy maintains local ethnic distinction, selection would specifically favour those mechanisms that reduced the incidence of inter marriage among the ethnic populations in communities where ethnic specialisation occurs. Although the specific cluster of isolating mechanisms varies from one human community to another, understandable ecological conditions the number of independent isolating mechanisms separating two or more local ethnic population should increase with time. Reproductive isolation underlies the recurring pattern of ethnic relations associated with the expanding pioneer populations. Initial flexible interactive evolve into more rigid stereotype exchanges on the number of immigrants increase and the competition over resources intensifies Anglo-American relations in the American wert is said to provide an example of this pattern. The formation and maintenance of distinct ethnic population is viewed as function of niche diversification at the community level. The selective advantage of clear ethnic, boundaries, evolves primarily from the demands imposed upon labour. Labour demands inturn are viewed by Abrazzi as a function of the specific pattern and intensity of resources exploitation imported upon the local communities, for example by the population or colonial domination. Where the 0& demands of a specific productive system places a selective premiums upon discrete populations, the efficiency .of human information processing and group co-ordination are increased by the existence of clear and unambiguous boundaries separating these populations. Clear ethnic boundaries are said to _\ \^function to improve productive efficiency by reducing the likelihood of competition between members of interacting population within the community. Since the organisation of population within any ecological community is a function of the availability and distribution of resources, break down in the barriers to marriage betweencthnic population results from a change in the conditions of resource exploitation to a situation favouring a different community organization, perhaps even one uniform population. The emergence decline, and transformation of socially significant ethnic units have been ubiquitous and may be seen as adaptive responses to the change of material demand imposed at the community level. 5.5 SUMMARY
37. 37 Inspired by the archaeological finding is North and South American, anthropologists who were probing into the life and living of the local people were inspires to investigates into the question of environmental influences on their pattern of growing, starting first with agriculture. They were by and large careful not to fall into the trap of environmental determination and struggled hard also to avoid environmental possiblism or have an geography. These questions are looked at historically, starting with Clarke Wissler. The field of investigation has widened out only two instances a pattern of agricultural change and ethnic differentation of a population are given as illustrative material in this section. 5.6 REFERENCES 1. Marvin Hawis - Rise of anthropological theory 2. William Abrizzi 1982, Ecological theory and ethnic differentation among human population current anthropology vol. 23 3. J. L. Collins 1982, seasonal migration as on cultural response. Current anthropology vol 24, 1, Feb 1983. 5.7 QUESTION 1) Briefly discuss ecological determination and possibalism. 6 CLASSICAL SOCIOLOGICAL THEORY 6.0 Objective 6.1 Introduction 6.2 Environmental changes and rapid degradation of environment Labor in 6.3 Transition 6.4 Origin of tools 6.5 Anthomy Gidden 6.6 Criticism on the view of Giddens 6.7 Andre Gorz and political economy 6.8 Summary 6.9 References 6.10 Question
38. 38 6.0 OBJECTIVE 1) To make students aware about the environmental degradation and the perception of classical sociologist on environment. 2) To acquaint students with the view of contemporary thinkers and classical thinkers on environment degradation. 6.1 INTRODUCTION Contemporary social thinkers say a lot about environmental degradation, however this perception is not shared by the classical sociologist e.g. comte and Spencer consider sociology to be directly dependent on biology. Weber has shown little concerned with the natural world. Durkheim did make the u natural world a casual factor in human history but non-classical theorists raised casual question on structural origin of environmental degradation. 6.2 ENVIRONMENTAL CHANGES AND RAPID DEGRADATION OF ENVIRONMENT. What have contemporary social theorists to say about environmental degradation. The theoretical legacy left by classical masters like Comte and Spencer, Dukheim and webs have substantial limitations. U Comte and Spencer consider sociology to be epistemologically and ontologically dependent on and subordinate to biology. Comte only draw on biological analogies and metaphors of from and function and the relationship between organism and organs to explore the interrelationship of individuals and institution in modern societies, Spencer would rightly be called Darwinist although he anticipated Darwin. Weber shows little concern with the natural world. Though Durkheim did make natural world a casual factor in human history, none of there classical theorist raise crucial questions on the structural origins of environment degradation. Classical sociological theories therefore, have substantial limitation to explain environmental changes and its rapid degradation. Marx, a classical theorist, on the other hand made humans a part of nature, and he laid the foundation for political economy. Talcott persons one of the great masters and one of the foremost theorists of the present Century gives a static model of human society and has nothing to say on natural environment. In other words, classical sociological theory does not possess an adequate conceptual framework to understand complex inter relation between a society and its environment, how the societies have transferred the natural environment and the negative consequences of such
39. 39 transformation on society. Marx, also a classical theorist, on the other hand made human a part of nature and how they enter into relationship with nature and with one another and the relations are not only social but simultaneously economic and political. In other worlds, he was abo making room for political economy. Labor in transition The first operations which our ancestors gradually learned to adopt their hands during the thousands of year of transition could have been only a very simple one. Even the most primitive are for superior. Much time must have passed before the human hands fashioned flint into a Knife. This was decisive step indicating how the hands become free and would began to attain greater dexterity and flexibility and this would be inherited from generation to Engels says that the hands is not only an organ of labor but it is also a product of labor, gained by repeated effort and passed on to the progeny. It was not merely the hand that evolved but the rest of the body too e.g. The feet for the erect gait kept pace with it as a result of laws of correlation of growth, as Darvin called it. Mastery over nature began with the development of the hand, with labor, and widened man's horizon. With every advance he was continually discovering new, hither to unknown properties in natural objects. One the other hand, the development of labor necessarily helped to bring the members of society closes together by increasing the cases of mutual support and joint activity, by making clear the advantage of joint activity to each individual. In short, they had something to say to each other. Necessity creates an organ, the undeveloped larynx developed modulations, and the organ of the mouth gradually learned to pronounce one articulate sound after another. In other words Engels tried to establish the origin of language through the process of labor. No other animal requires articulate speech. The dog and the horse through association with man have developed such a good ear that they easily learn to understand any language within their range of concepts. First labor, than with it speech there was the two most essential stinule under which the brain of the ape changed into that of the man. Hand in hand with the development of brain went the development of its most immediate senses and the corresponding refinement of hearing and the other senses, the eye, smell and touch. The ape hardly possess the sense of touch. The dog has a keener sense of smell than man, but it does not distinguish a hundredth part of the odors that for men are definite signs devoting different things. The reaction on labor and speech on the development of the brain and its attendant senses, of the increasing clarity of consciousness, power of abstraction and conclusion, gave labor and speech an ever - renewed impulse to further development. This development did not reach its conclusion when